Seismic survey 010001Z dec to 152359Z feb 15 by M/V polarcus alima towing ten 7500 meter long cables in area…
North Atlantic Ocean · HYDROLANT 2910/14
What this record establishes
Archived notice · 2015-02-10 04:57Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA II 408/14 291633Z NOV 14.. Issued 2014-11-29 17:18Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- North Atlantic Ocean. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2014-12-01 00:01Z | 2015-02-15 23:59Z | — | 1847 h 58 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2014-11-29 17:18Z
- status
- Archived notice
- self-cancels
- 2015-02-16 00:59Z
- authority
- NAVAREA II 408/14 291633Z NOV 14.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 10.402, -16.413
- vessel
- M/V POLARCUS ALIMA · 115 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH ATLANTIC. GUINEA. DNC 01. 1. SEISMIC SURVEY 010001Z DEC TO 152359Z FEB 15 BY M/V POLARCUS ALIMA TOWING TEN 7500 METER LONG CABLES IN AREA BOUND BY 10-52.80N 016-32.50W, 10-47.25N 016-20.25W, 10-12.51N 015-54.07W, 09-52.95N 016-23.22W, 10-37.00N 016-55.23W. SIX MILE BERTH REQUESTED. 2. CANCEL THIS MSG 160059Z FEB 15.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · cable & pipeline work
20 within 180 nm since 2001 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- Cable operations in progress until 010100Z nov by cableship ile d'aix along tracklines joining: a. 04-04.00N…2023-09-11
- Cable operations 261200Z to 291200Z apr by cableship peter faber along trackline joining 11-42.5N 016-01.3W,…2019-04-25
- Cable operations 27 feb thru 20 mar by M/V ile de sein along trackline joining 11-44.0N 015-49.2W, 11-42.5N…2019-02-24
- Cable operations 091800Z apr until further notice by cableship pierre de fermat with submersible along…2018-04-06
- Cable operations 120600Z jan to 152359Z feb by M/V rebecca along trackline joining 14-16.8N 017-52.3W,…2018-01-11
- Cable laying operations 120600Z jan to 152359Z feb by M/V rebecca along trackline joining 14-16.1N…2018-01-10
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 04:35Z; source collection times vary.
Cable ops
Cable laying, pipeline and seismic operations. All current cable & pipeline work →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.